EP0211801B1 - Perceuse - Google Patents

Perceuse Download PDF

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Publication number
EP0211801B1
EP0211801B1 EP86810260A EP86810260A EP0211801B1 EP 0211801 B1 EP0211801 B1 EP 0211801B1 EP 86810260 A EP86810260 A EP 86810260A EP 86810260 A EP86810260 A EP 86810260A EP 0211801 B1 EP0211801 B1 EP 0211801B1
Authority
EP
European Patent Office
Prior art keywords
bevel gears
shaft
take
power
bevel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP86810260A
Other languages
German (de)
English (en)
Other versions
EP0211801A1 (fr
Inventor
Anton Neumaier
Hans-Jürgen Hoereth
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hilti AG
Original Assignee
Hilti AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hilti AG filed Critical Hilti AG
Publication of EP0211801A1 publication Critical patent/EP0211801A1/fr
Application granted granted Critical
Publication of EP0211801B1 publication Critical patent/EP0211801B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D16/00—Portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B25D16/006—Mode changers; Mechanisms connected thereto
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2211/00—Details of portable percussive tools with electromotor or other motor drive
    • B25D2211/003—Crossed drill and motor spindles

Definitions

  • the invention relates to a drilling device with optional connection of clockwise or counter-clockwise rotation, with an output shaft for the rotary drive of a tool, on the output shaft bevel gears which can be set in opposite rotational movement with toothings turned in the axial direction with respect to one another, the drive shaft having a bevel pinion arranged between the toothings of the two bevel gears .
  • a known drilling device in the form of a hand tool has a manual transmission which, with a uniform direction of motor rotation, allows either clockwise or counterclockwise rotation to be connected to an output shaft.
  • the manual transmission has gearwheels in the form of spur gears, which are rotatably mounted on the output shaft.
  • a drive shaft provides the gears with opposite rotational movement, one gear meshing directly with a ring gear of the drive shaft and the other gear being driven via an intermediate gear.
  • a hand drill with a manual transmission for clockwise or counter-clockwise rotation according to the preamble of the claim is known (DE-A-2 043 805, Fig. 3), in which two bevel gears are fixedly arranged on an output shaft. For mutual engagement with a bevel pinion on the drive side, the bevel gears are axially displaced together with the output shaft.
  • the invention has for its object to provide a drill with a structurally simple solution for the functions clockwise or counterclockwise rotation and switching off the rotary movement.
  • the mutually facing arrangement of the toothing of the bevel gears in conjunction with the toothing of the drive shaft achieves an opposite rotational movement without the need for the arrangement of an intermediate gear.
  • the bevel gears are driven by the drive shaft, the bevel gears meshing together with the toothing of the bevel pinion of the drive shaft in order to achieve the same speed. If, however, unequal speeds are advantageous for the bevel gears, separate toothings of different sizes can be provided on the drive shaft for both bevel gears.
  • the teeth of the bevel gears can have straight or curved teeth.
  • the rotary movement must be switched off for chisel operation. This is done in a simple manner via the displaceable coupling part, in that it is not connected to either of the two bevel gears in a central position. By moving the coupling part in one direction or the other, either clockwise or counterclockwise rotation of the output shaft and thus the tool can be activated.
  • Suitable engagement means for the coupling part are, for example, a plurality of tooth gaps lying on a circular path. Corresponding to the tooth gaps, claws are provided on the coupling part, which can come into positive engagement with the tooth gaps.
  • the coupling part which is displaceable along the output shaft, is connected to the output shaft in a rotationally locking manner via a feather key or the like.
  • the expediently annular coupling part can be moved from the outside, for example by an eccentric handle.
  • the hammer drill has a housing 1 with a handle 2.
  • the housing 1 is protruded from the front by a tool holder 3.
  • a tool in the form of a flat chisel 4 is held in the tool holder 3 in accordance with the switched-on operating state.
  • the flat chisel 4 is given 5 impact energy by a percussion piston.
  • the percussion piston 5 is for this purpose slidably mounted in a hollow cylindrical output shaft 6.
  • a displaceable drive piston 7 is also arranged at an axial distance behind the percussion piston 5 in the bore of the output shaft 6.
  • An intermittent stroke movement of the drive piston 7 alternately compresses and decompresses an air cushion 8 located between it and the percussion piston 5, as a result of which the percussion piston 5 is also set into a stroke movement in order to deliver the impact energy.
  • Percussion piston 5 and drive piston 7 have sealing rings 9, 11 for maintaining the air cushion 8.
  • the stroke movement of the drive piston 7 is motorized.
  • An output pinion 12 of a drive motor drives a crankshaft 14 via a toothed wheel 13.
  • the latter is rotatably supported in the housing 1 by roller bearings 15, 16.
  • a connecting rod 17 connects the drive piston 7 to a crank pin 19 of the crankshaft 14 via a cross pin 18.
  • a roller bearing 21 is used to support the connecting rod 17 on the crank pin 19.
  • the output pinion 12 also meshes with a gear 22, which is non-rotatably seated on an overall drive shaft designated 23.
  • the drive shaft 23 is rotatably mounted in the housing 1 via roller bearings 24, 25.
  • a bevel pinion 26 of the drive shaft 23 drives two bevel gears 27, 28, which are concentric sit on the output shaft 6.
  • the bevel gears 27, 28 On the mutually facing end faces, the bevel gears 27, 28 have engagement means 32, 33 in the form of tooth gaps.
  • the bevel gears 27, 28 are rotatable relative to the output shaft 6 by slide bearings 34, 35 and by circlips 36, 37; 38, 39 arranged axially immovable.
  • On the bevel gear 27 there is also a roller bearing 41 on the outside, which is supported radially in a guide tube 42.
  • the guide tube 42 is non-rotatably seated in the housing 1. In this way, the output shaft 6 is rotatably supported relative to the housing 1.
  • the coupling part 43 is displaceable relative to the output shaft 6 and is rotatably supported by a feather key 44.
  • Opposed to the engaging means 32, 33 are claws 45, 46 on the coupling part 43 which, when the coupling part 43 is displaced in one direction or the other, form a positive, rotationally fixed connection with the engaging means of the respective bevel gear 27 or 28.
  • the eccentric handle 48 essentially consists of a pin 49 rotatably mounted in the housing 1 with an eccentrically arranged cam 51 projecting into the annular groove and an actuating handle 52 connected to the pin 49 in a rotationally fixed manner.
  • a disk 53 fixed to the housing supports the pin 49 from the outside.
  • a locking ball 54 is also provided on the actuating handle 52, which engages in one of three locking recesses 55 in the housing 1 in order to lock the respective switching position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling And Boring (AREA)
  • Percussive Tools And Related Accessories (AREA)

Claims (1)

  1. Dispositif de perçage avec mise en circuit, au choix, pour la rotation à droite ou à gauche, comprenant un arbre mené (6) pour l'entraînement en rotation d'un outil (4), des roues coniques (27, 28) avec des dentures (29, 31) dirigées l'une vers l'autre dans la direction de l'axe, montées à distance axiale l'une de l'autre sur l'arbre mené (6) et pouvant être mises en rotation en sens opposé par un arbre moteur (23), l'arbre moteur (23) présentant un pignon conique (26) disposé entre lesdites dentures (29, 31) desdites roues coniques (27, 28), caractérisée en ce que les roues coniques (27, 28) sont montées sur l'arbre mené (6) de façon à pouvoir tourner et engrènent ensemble avec la denture du pignon conique (26) et qu'il est prévu un élément d'accouplement (43) déplaçable le long de l'arbre mené (6) pour solidariser sélectivement en rotation l'une des roues coniques t27, 28) avec l'arbre mené (6), les roues coniques (27, 28) comprenant des moyens d'engagement pour l'élément d'accouplement (43).
EP86810260A 1985-07-29 1986-06-11 Perceuse Expired EP0211801B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853527091 DE3527091A1 (de) 1985-07-29 1985-07-29 Bohrgeraet
DE3527091 1985-07-29

Publications (2)

Publication Number Publication Date
EP0211801A1 EP0211801A1 (fr) 1987-02-25
EP0211801B1 true EP0211801B1 (fr) 1989-09-27

Family

ID=6277054

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86810260A Expired EP0211801B1 (fr) 1985-07-29 1986-06-11 Perceuse

Country Status (3)

Country Link
US (1) US4825961A (fr)
EP (1) EP0211801B1 (fr)
DE (2) DE3527091A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3826213A1 (de) * 1988-08-02 1990-02-15 Bosch Gmbh Robert Bohr- oder schlaghammer
DE4202767C2 (de) * 1992-01-31 1999-06-02 Black & Decker Inc Bohrhammer
DE4441793B4 (de) * 1994-11-24 2006-08-24 Robert Bosch Gmbh Umschalteinrichtung für eine Handwerkzeugmaschine
JP3292972B2 (ja) * 1996-03-29 2002-06-17 株式会社マキタ 打撃工具
DE10031050A1 (de) * 2000-06-26 2002-01-10 Hilti Ag Handwerkzeuggerät
DE10205030A1 (de) * 2002-02-07 2003-08-21 Hilti Ag Betriebsmodi-Schalteinheit einer Handwerkzeugmaschine
GB0226523D0 (en) * 2002-11-14 2002-12-18 Black & Decker Inc Electric motor driven hand-held tool
DE10355812A1 (de) * 2003-11-28 2005-06-09 Robert Bosch Gmbh Elektrowerkzeugmaschine
DE102004018084B3 (de) * 2004-04-08 2005-11-17 Hilti Ag Hammerbohrgerät
DE102009054927B4 (de) * 2009-12-18 2025-12-18 Robert Bosch Gmbh Handwerkzeugmaschine, insbesondere Akkuhandwerkzeugmaschine
GB201321893D0 (en) 2013-12-11 2014-01-22 Black & Decker Inc Rotary Hammer
DE102018214092A1 (de) * 2018-08-21 2020-02-27 Robert Bosch Gmbh Umschaltvorrichtung für einen Bohrhammer und Bohrhammer mit einer Umschaltvorrichtung
CN113474125B (zh) * 2019-03-28 2024-07-30 工机控股株式会社 冲击作业机

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US991094A (en) * 1910-09-20 1911-05-02 John Schneider Combination-tool.
US1170041A (en) * 1915-04-26 1916-02-01 William J Brennan Drilling and tapping attachment.
US1170171A (en) * 1915-05-20 1916-02-01 Alfred M Lane Portable drilling and tapping machine.
US1475982A (en) * 1921-07-18 1923-12-04 Joseph F Buhr Attachment for drilling machines
US1936108A (en) * 1932-12-19 1933-11-21 J D Treece Reversing device for threading taps
US2473816A (en) * 1946-01-04 1949-06-21 Perkins Machine & Gear Co Drive mechanism
US2591516A (en) * 1950-05-08 1952-04-01 Victor L Darnell Dispensing device
FR1104099A (fr) * 1954-04-27 1955-11-16 Brevets Wagner Soc D Machine électrique à outil rotatif
US3114423A (en) * 1960-03-30 1963-12-17 Skil Corp Rotary-hammer device
DE2043805A1 (de) * 1970-09-03 1972-03-09 Szczepaniak J Bohrspindelantneb mit Umschaltung der Antnebsrichtung fur Handbohrmaschinen
DE2242944B2 (de) * 1972-08-31 1981-04-23 Robert Bosch Gmbh, 7000 Stuttgart Bohrhammer
US4217964A (en) * 1979-01-02 1980-08-19 Stryker Corporation Forward and reverse rotary tool
DE2920065C2 (de) * 1979-05-18 1986-07-17 Metabowerke GmbH & Co, 7440 Nürtingen Motorisch angetriebene Handwerkzeugmaschine zum Bohren, Schlagbohren und Schrauben
DE2936996A1 (de) * 1979-09-13 1981-04-02 Scintilla Ag, Solothurn Motorgetriebenes handwerkzeug
US4619162A (en) * 1982-09-30 1986-10-28 Laere Christiaan G M Hand-holdable electric power tool apparatus

Also Published As

Publication number Publication date
EP0211801A1 (fr) 1987-02-25
DE3665829D1 (en) 1989-11-02
US4825961A (en) 1989-05-02
DE3527091A1 (de) 1987-01-29

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